Path.GetExtension Method (String)

 
System_CAPS_noteNote

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Returns the extension of the specified path string.

Namespace:   System.IO
Assembly:  mscorlib (in mscorlib.dll)

static member GetExtension : 
        path:string -> string

Parameters

path
Type: System.String

The path string from which to get the extension.

Return Value

Type: System.String

The extension of the specified path (including the period "."), or null, or String.Empty. If path is null, GetExtension returns null. If path does not have extension information, GetExtension returns String.Empty.

Exception Condition
ArgumentException

path contains one or more of the invalid characters defined in GetInvalidPathChars.

The extension of path is obtained by searching path for a period (.), starting with the last character in path and continuing toward the start of path. If a period is found before a DirectorySeparatorChar or AltDirectorySeparatorChar character, the returned string contains the period and the characters after it; otherwise, Empty is returned.

For a list of common I/O tasks, see Common I-O Tasks.

The following code example demonstrates using the GetExtension method on a Windows-based desktop platform.

No code example is currently available or this language may not be supported.

Universal Windows Platform
Available since 8
.NET Framework
Available since 1.1
Portable Class Library
Supported in: portable .NET platforms
Silverlight
Available since 2.0
Windows Phone Silverlight
Available since 7.0
Windows Phone
Available since 8.1
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